These release notes provide information on the new features and known issues and limitations for Impala versions up to Impala 3.4.x. For users upgrading from earlier Impala releases, or using Impala in combination with specific versions of other software, Incompatible Changes and Limitations in Apache Impala lists any changes to file formats, SQL syntax, or software dependencies to take into account.
Once you are finished reviewing these release notes, for more information about using Impala, see Impala Concepts and Architecture.